History. Your expertise aids you in identifying ceramic objects, including when they were created and their likely place or culture of origin.
Investigation, Perception. You gain additional insight when inspecting ceramics, uncovering clues others would overlook by spotting minor irregularities.
Reconstruction. By examining pottery shards, you can determine an object's original, intact form and its likely purpose.
Additional uses. You can use your potter's tools to do a variety of things, as your DM if you may use the tools for a specific task. Examples of such tasks are as follows; determine what a vessel once held, create a serviceable pot, find a weak point in a ceramic object.